Ceylon Weather Records (CA004011440)

Record envelope, standing records and threshold days for Ceylon (CA004011440), Saskatchewan, Canada, with 57 years of record.

Key Facts for Ceylon

Ceylon (CA004011440) is a weather station in Saskatchewan, Canada at 49.47 latitude and -104.60 longitude, 713 m (2,339 ft) above sea level.
The station reports from 1922 to 1978, 57 years of record.
1,464 records set at Ceylon still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Ceylon set a daily record high maximum temperature of 34.4 C (93.9 F) on 30 June 1978.

About the Station

Location: Saskatchewan, Canada, 49.47 latitude, -104.60 longitude.
Elevation: 713 m (2,339 ft).
Period of record: 1922 to 1978, 57 years.
Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Ceylon. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ceylon, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	8.9 C (48.0 F)	-40.6 C (-41.1 F)	n/a	n/a
Feb	11.7 C (53.1 F)	-40.0 C (-40.0 F)	n/a	n/a
Mar	22.2 C (72.0 F)	-37.2 C (-35.0 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-26.1 C (-15.0 F)	n/a	n/a
May	35.0 C (95.0 F)	-12.8 C (9.0 F)	n/a	n/a
Jun	37.8 C (100.0 F)	-5.6 C (21.9 F)	n/a	n/a
Jul	40.6 C (105.1 F)	1.1 C (34.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	-2.2 C (28.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	-10.0 C (14.0 F)	n/a	n/a
Oct	29.4 C (84.9 F)	-21.7 C (-7.1 F)	n/a	n/a
Nov	22.8 C (73.0 F)	-32.8 C (-27.0 F)	n/a	n/a
Dec	10.0 C (50.0 F)	-38.3 C (-36.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ceylon still stand. 1941 holds the most, with 67.

Standing records at Ceylon by the year they were set
Year set	Standing records
1940	50
1941	67
1942	55
1943	62
1944	41
1945	22
1946	46
1947	14
1948	42
1949	56
1950	46
1951	63
1952	31
1953	46
1954	53
1955	31
1956	39
1957	25
1958	34
1959	48
1960	26
1961	33
1962	41
1963	41
1964	45
1965	44
1966	53
1967	30
1968	47
1969	25
1970	15
1971	15
1972	24
1973	35
1974	22
1975	27
1976	22
1977	42
1978	6

All-Time Record Progression

1 new records

1 all-time records were set at Ceylon between 28 April 1970 and 28 April 1970. Each dot is a new record.

Wettest Day of Each Month

Jul: 72.1 mm (2.8 in)

The wettest day on record for each calendar month at Ceylon. The most was 72.1 mm (2.8 in) on 4 July 1923.

Record daily precipitation for each month at Ceylon
Month	Record daily precipitation (mm)	Date
Jan	20.3 mm (0.8 in)	8 January 1927
Feb	16.0 mm (0.6 in)	14 February 1923
Mar	45.7 mm (1.8 in)	17 March 1943
Apr	50.8 mm (2.0 in)	21 April 1928
May	62.0 mm (2.4 in)	5 May 1965
Jun	70.4 mm (2.8 in)	26 June 1959
Jul	72.1 mm (2.8 in)	4 July 1923
Aug	56.6 mm (2.2 in)	8 August 1943
Sep	67.6 mm (2.7 in)	13 September 1954
Oct	46.2 mm (1.8 in)	18 October 1971
Nov	18.3 mm (0.7 in)	1 November 1973
Dec	15.2 mm (0.6 in)	13 December 1924

Period of Record Coverage

1940 to 1978

39 years of record at Ceylon, 1940 to 1978. 10 years have data for under 90 percent of days and are left out of rankings: 1940, 1942, 1944, 1945, 1946, 1947, 1970, 1971 and others.

Days with data per year at Ceylon
Year	Days with data	Share of year	Complete
1940	272	74%	No
1941	352	96%	Yes
1942	328	90%	No
1943	359	98%	Yes
1944	329	90%	No
1945	274	75%	No
1946	301	82%	No
1947	274	75%	No
1948	364	99%	Yes
1949	364	100%	Yes
1950	364	100%	Yes
1951	365	100%	Yes
1952	335	92%	Yes
1953	331	91%	Yes
1954	332	91%	Yes
1955	364	100%	Yes
1956	366	100%	Yes
1957	361	99%	Yes
1958	359	98%	Yes
1959	365	100%	Yes
1960	349	95%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	364	100%	Yes
1964	364	99%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	365	100%	Yes
1969	365	100%	Yes
1970	273	75%	No
1971	225	62%	No
1972	280	77%	No
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	356	98%	Yes
1978	181	50%	No

Latest Records

Latest records at Ceylon
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 June 1978	Ceylon, CA	daily high max	34.4 C (93.9 F)	3.8 C (6.8 F)	20 years	15 of 100 (Routine)
25 June 1978	Ceylon, CA	daily rain	66.8 mm (2.6 in)	24.1 mm (0.9 in)	7 years	32 of 100 (Routine)
7 June 1978	Ceylon, CA	daily low min	1.7 C (35.1 F)	0.5 C (0.9 F)	21 years	10 of 100 (Routine)
30 May 1978	Ceylon, CA	daily low max	7.2 C (45.0 F)	1.7 C (3.1 F)	16 years	9 of 100 (Routine)
30 May 1978	Ceylon, CA	daily rain (Tie)	34.3 mm (1.4 in)	tie	28 years	3 of 100 (Routine)
22 May 1978	Ceylon, CA	daily high max	29.4 C (84.9 F)	2.2 C (4.0 F)	29 years	14 of 100 (Routine)
15 May 1978	Ceylon, CA	daily high max	29.4 C (84.9 F)	1.6 C (2.9 F)	33 years	15 of 100 (Routine)
10 May 1978	Ceylon, CA	daily rain (Tie)	12.7 mm (0.5 in)	tie	24 years	3 of 100 (Routine)
17 April 1978	Ceylon, CA	daily rain	7.1 mm (0.28 in)	2.3 mm (0.09 in)	36 years	18 of 100 (Routine)
30 March 1978	Ceylon, CA	monthly high max	22.2 C (72.0 F)	0.5 C (0.9 F)	12 years	16 of 100 (Routine)
29 March 1978	Ceylon, CA	daily high max (Tie)	18.9 C (66.0 F)	tie	12 years	1 of 100 (Routine)
16 January 1978	Ceylon, CA	daily low min (Tie)	-34.4 C (-29.9 F)	tie	28 years	2 of 100 (Routine)
15 December 1977	Ceylon, CA	daily high min (Tie)	-3.3 C (26.1 F)	tie	18 years	2 of 100 (Routine)
14 December 1977	Ceylon, CA	daily rain	11.4 mm (0.4 in)	3.8 mm (0.15 in)	52 years	20 of 100 (Routine)
9 December 1977	Ceylon, CA	daily low max	-29.4 C (-20.9 F)	4.4 C (7.9 F)	28 years	16 of 100 (Routine)
9 December 1977	Ceylon, CA	monthly low min (Tie)	-38.3 C (-36.9 F)	tie	8 years	3 of 100 (Routine)
8 December 1977	Ceylon, CA	daily low max	-28.9 C (-20.0 F)	2.8 C (5.0 F)	4 years	7 of 100 (Routine)
8 December 1977	Ceylon, CA	daily low min (Tie)	-33.9 C (-29.0 F)	tie	4 years	1 of 100 (Routine)
5 December 1977	Ceylon, CA	daily low min	-33.3 C (-27.9 F)	1.6 C (2.9 F)	20 years	10 of 100 (Routine)
5 December 1977	Ceylon, CA	daily low max	-28.3 C (-18.9 F)	4.4 C (7.9 F)	4 years	9 of 100 (Routine)

Climate Trend

25 complete years, 1943 to 1977

One stripe for each of 25 complete years at Ceylon, 1943 to 1977. Blue stripes are years cooler than the station's own mean of 2.4 C (36.3 F); red stripes are warmer. The coolest year was 1951, at -0.6 C (30.8 F), and the warmest was 1973, at 4.5 C (40.0 F). The strongest colour marks a difference of 3.1 C (5.6 F).

Annual mean temperature at Ceylon as warming stripes, 1943 to 1977
Year	Annual mean temperature	Difference from the station mean
1943	4.0 C	+1.55 C
1948	1.8 C	-0.65 C
1949	2.1 C	-0.33 C
1950	-0.3 C	-2.75 C
1951	-0.6 C	-3.04 C
1955	1.7 C	-0.66 C
1956	2.2 C	-0.16 C
1957	2.5 C	+0.09 C
1958	3.2 C	+0.77 C
1959	2.5 C	+0.14 C
1960	2.8 C	+0.35 C
1961	3.4 C	+0.98 C
1962	2.5 C	+0.07 C
1963	3.0 C	+0.58 C
1964	1.7 C	-0.67 C
1965	0.1 C	-2.27 C
1966	0.7 C	-1.73 C
1967	2.4 C	-0.01 C
1968	3.7 C	+1.30 C
1969	2.6 C	+0.16 C
1973	4.5 C	+2.07 C
1974	3.3 C	+0.88 C
1975	2.7 C	+0.31 C
1976	3.9 C	+1.47 C
1977	3.8 C	+1.44 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1922 to 1978

Yearly extremes at Ceylon: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	1941	36.7 C (98.1 F)	39
Coldest night (TNn)	-40.6 C (-41.1 F)	1950	-36.7 C (-34.1 F)	39
Wettest day (Rx1day)	72.1 mm (2.8 in)	1923	36.1 mm (1.4 in)	57
Wettest five days (Rx5day)	137.5 mm (5.4 in)	1933	58.4 mm (2.3 in)	57
Longest dry spell (CDD)	77 days	1960	31 days	57

Hottest day (TXx)

The hottest day of the year at Ceylon, 1922 to 1978. The record is 40.6 C (105.1 F) in 1941, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Ceylon by year
Year	Hottest day (TXx)
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	38.9 C (102.0 F)
1941	40.6 C (105.1 F)
1942	36.1 C (97.0 F)
1943	36.7 C (98.1 F)
1944	35.0 C (95.0 F)
1945	37.2 C (99.0 F)
1946	36.1 C (97.0 F)
1947	37.2 C (99.0 F)
1948	35.6 C (96.1 F)
1949	39.4 C (102.9 F)
1950	32.2 C (90.0 F)
1951	37.8 C (100.0 F)
1952	38.3 C (100.9 F)
1953	32.2 C (90.0 F)
1954	33.3 C (91.9 F)
1955	35.0 C (95.0 F)
1956	37.8 C (100.0 F)
1957	36.7 C (98.1 F)
1958	38.9 C (102.0 F)
1959	38.9 C (102.0 F)
1960	38.3 C (100.9 F)
1961	37.8 C (100.0 F)
1962	32.2 C (90.0 F)
1963	37.8 C (100.0 F)
1964	35.6 C (96.1 F)
1965	35.6 C (96.1 F)
1966	35.6 C (96.1 F)
1967	37.2 C (99.0 F)
1968	37.2 C (99.0 F)
1969	38.3 C (100.9 F)
1970	35.6 C (96.1 F)
1971	37.8 C (100.0 F)
1972	36.1 C (97.0 F)
1973	34.4 C (93.9 F)
1974	35.0 C (95.0 F)
1975	37.2 C (99.0 F)
1976	37.2 C (99.0 F)
1977	33.9 C (93.0 F)
1978	34.4 C (93.9 F)

Coldest night (TNn)

The coldest night of the year at Ceylon, 1922 to 1978. The record is -40.6 C (-41.1 F) in 1950, marked on the chart; the median year is -36.7 C (-34.1 F).

Coldest night (TNn) at Ceylon by year
Year	Coldest night (TNn)
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	-22.2 C (-8.0 F)
1941	-36.7 C (-34.1 F)
1942	-35.6 C (-32.1 F)
1943	-37.2 C (-35.0 F)
1944	-35.0 C (-31.0 F)
1945	-14.4 C (6.1 F)
1946	-32.2 C (-26.0 F)
1947	-31.7 C (-25.1 F)
1948	-37.2 C (-35.0 F)
1949	-39.4 C (-38.9 F)
1950	-40.6 C (-41.1 F)
1951	-37.2 C (-35.0 F)
1952	-36.7 C (-34.1 F)
1953	-34.4 C (-29.9 F)
1954	-29.4 C (-20.9 F)
1955	-36.7 C (-34.1 F)
1956	-36.7 C (-34.1 F)
1957	-35.0 C (-31.0 F)
1958	-33.9 C (-29.0 F)
1959	-36.7 C (-34.1 F)
1960	-33.9 C (-29.0 F)
1961	-37.8 C (-36.0 F)
1962	-40.0 C (-40.0 F)
1963	-36.7 C (-34.1 F)
1964	-37.2 C (-35.0 F)
1965	-37.8 C (-36.0 F)
1966	-40.0 C (-40.0 F)
1967	-38.3 C (-36.9 F)
1968	-38.3 C (-36.9 F)
1969	-38.9 C (-38.0 F)
1970	-38.3 C (-36.9 F)
1971	-30.0 C (-22.0 F)
1972	-38.3 C (-36.9 F)
1973	-32.2 C (-26.0 F)
1974	-35.6 C (-32.1 F)
1975	-32.2 C (-26.0 F)
1976	-33.3 C (-27.9 F)
1977	-38.3 C (-36.9 F)
1978	-34.4 C (-29.9 F)

Wettest day (Rx1day)

The wettest day of the year at Ceylon, 1922 to 1978. The record is 72.1 mm (2.8 in) in 1923, marked on the chart; the median year is 36.1 mm (1.4 in).

Wettest day (Rx1day) at Ceylon by year
Year	Wettest day (Rx1day)
1922	30.5 mm (1.2 in)
1923	72.1 mm (2.8 in)
1924	47.2 mm (1.9 in)
1925	58.4 mm (2.3 in)
1926	58.7 mm (2.3 in)
1927	51.1 mm (2.0 in)
1928	50.8 mm (2.0 in)
1929	17.0 mm (0.7 in)
1930	23.4 mm (0.9 in)
1931	24.4 mm (1.0 in)
1932	33.0 mm (1.3 in)
1933	56.4 mm (2.2 in)
1934	12.7 mm (0.5 in)
1935	30.0 mm (1.2 in)
1936	41.1 mm (1.6 in)
1937	35.1 mm (1.4 in)
1938	23.6 mm (0.9 in)
1939	25.9 mm (1.0 in)
1940	45.7 mm (1.8 in)
1941	47.0 mm (1.9 in)
1942	31.8 mm (1.3 in)
1943	56.6 mm (2.2 in)
1944	59.2 mm (2.3 in)
1945	23.4 mm (0.9 in)
1946	34.0 mm (1.3 in)
1947	55.4 mm (2.2 in)
1948	30.5 mm (1.2 in)
1949	34.8 mm (1.4 in)
1950	36.1 mm (1.4 in)
1951	49.8 mm (2.0 in)
1952	49.0 mm (1.9 in)
1953	44.5 mm (1.8 in)
1954	67.6 mm (2.7 in)
1955	45.7 mm (1.8 in)
1956	19.1 mm (0.8 in)
1957	18.0 mm (0.7 in)
1958	14.0 mm (0.6 in)
1959	70.4 mm (2.8 in)
1960	44.5 mm (1.8 in)
1961	32.3 mm (1.3 in)
1962	25.4 mm (1.0 in)
1963	33.8 mm (1.3 in)
1964	33.0 mm (1.3 in)
1965	64.8 mm (2.6 in)
1966	53.8 mm (2.1 in)
1967	30.5 mm (1.2 in)
1968	35.6 mm (1.4 in)
1969	41.4 mm (1.6 in)
1970	49.5 mm (1.9 in)
1971	46.2 mm (1.8 in)
1972	61.5 mm (2.4 in)
1973	30.7 mm (1.2 in)
1974	31.0 mm (1.2 in)
1975	36.1 mm (1.4 in)
1976	34.8 mm (1.4 in)
1977	46.2 mm (1.8 in)
1978	66.8 mm (2.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ceylon, 1922 to 1978. The record is 137.5 mm (5.4 in) in 1933, marked on the chart; the median year is 58.4 mm (2.3 in).

Wettest five days (Rx5day) at Ceylon by year
Year	Wettest five days (Rx5day)
1922	53.6 mm (2.1 in)
1923	120.3 mm (4.7 in)
1924	47.2 mm (1.9 in)
1925	58.4 mm (2.3 in)
1926	62.3 mm (2.5 in)
1927	70.9 mm (2.8 in)
1928	84.9 mm (3.3 in)
1929	33.0 mm (1.3 in)
1930	35.3 mm (1.4 in)
1931	24.4 mm (1.0 in)
1932	74.6 mm (2.9 in)
1933	137.5 mm (5.4 in)
1934	21.6 mm (0.9 in)
1935	47.8 mm (1.9 in)
1936	48.7 mm (1.9 in)
1937	36.1 mm (1.4 in)
1938	48.8 mm (1.9 in)
1939	50.2 mm (2.0 in)
1940	61.0 mm (2.4 in)
1941	59.4 mm (2.3 in)
1942	44.6 mm (1.8 in)
1943	71.1 mm (2.8 in)
1944	65.5 mm (2.6 in)
1945	47.7 mm (1.9 in)
1946	46.3 mm (1.8 in)
1947	85.2 mm (3.4 in)
1948	35.6 mm (1.4 in)
1949	48.0 mm (1.9 in)
1950	40.5 mm (1.6 in)
1951	88.2 mm (3.5 in)
1952	75.9 mm (3.0 in)
1953	73.9 mm (2.9 in)
1954	85.6 mm (3.4 in)
1955	50.2 mm (2.0 in)
1956	40.2 mm (1.6 in)
1957	27.7 mm (1.1 in)
1958	16.5 mm (0.6 in)
1959	84.4 mm (3.3 in)
1960	63.8 mm (2.5 in)
1961	32.8 mm (1.3 in)
1962	43.2 mm (1.7 in)
1963	65.6 mm (2.6 in)
1964	53.1 mm (2.1 in)
1965	68.9 mm (2.7 in)
1966	91.6 mm (3.6 in)
1967	52.7 mm (2.1 in)
1968	77.4 mm (3.0 in)
1969	57.7 mm (2.3 in)
1970	64.7 mm (2.5 in)
1971	60.5 mm (2.4 in)
1972	74.5 mm (2.9 in)
1973	57.9 mm (2.3 in)
1974	55.8 mm (2.2 in)
1975	65.3 mm (2.6 in)
1976	82.6 mm (3.3 in)
1977	63.0 mm (2.5 in)
1978	83.1 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ceylon, 1922 to 1978. The record is 77 days in 1960, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Ceylon by year
Year	Longest dry spell (CDD)
1922	23 days
1923	21 days
1924	22 days
1925	21 days
1926	20 days
1927	25 days
1928	51 days
1929	23 days
1930	28 days
1931	31 days
1932	24 days
1933	26 days
1934	62 days
1935	44 days
1936	25 days
1937	38 days
1938	32 days
1939	29 days
1940	25 days
1941	57 days
1942	35 days
1943	28 days
1944	48 days
1945	34 days
1946	19 days
1947	32 days
1948	39 days
1949	36 days
1950	22 days
1951	15 days
1952	31 days
1953	31 days
1954	68 days
1955	26 days
1956	36 days
1957	24 days
1958	55 days
1959	22 days
1960	77 days
1961	30 days
1962	32 days
1963	26 days
1964	49 days
1965	43 days
1966	33 days
1967	24 days
1968	37 days
1969	34 days
1970	23 days
1971	28 days
1972	26 days
1973	34 days
1974	29 days
1975	35 days
1976	33 days
1977	28 days
1978	34 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

25 years with a frost

Across 25 years with a frost, the median last spring frost at Ceylon falls on 25 May and the median first autumn frost on 9 September, which leaves a median of 105 days between them.

Fitted over all years, the growing season changes by +9.0 days per decade at this station.

Frost dates and growing season at Ceylon
Measure	Median, all years	Earliest period	Recent period (1943 to 1977)	Recent against earliest	Fitted trend
Last spring frost	25 May	n/a	25 May	n/a	-6.5 days per decade
First autumn frost	9 September	n/a	9 September	n/a	+2.5 days per decade
Growing days	105 days	n/a	105 days	n/a	+9.0 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

47 years, 1923 to 1977

A day with at least 38.7 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 78.6 mm (3.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Ceylon: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	38.7 mm (1.5 in)
5 years	52.3 mm (2.1 in)
10 years	60.0 mm (2.4 in)
25 years	68.4 mm (2.7 in)
50 years	73.8 mm (2.9 in)	Longer than the 47 years of record
100 years	78.6 mm (3.1 in)	Longer than the 47 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 47 years of values from 1923 to 1977.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 72.1 mm (2.8 in) in 1923; 70.4 mm (2.8 in) in 1959; 67.6 mm (2.7 in) in 1954.

Download the Data

Data for Ceylon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ceylon threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).