America/Managua

Time zone identifier: America/Managua

Current civil offset: -06:00 (CST)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1890-01-01

Local Mean Time (LMT): -05:45:08 based on geographic meridian

Total recorded transitions: 16 transitions across 4 distinct offsets

Associated countries: NI

Historical Offset Step Chart (1880 to Present)

Text summary: America/Managua shifted between 4 distinct offsets from 1890-01-01 through the modern era.

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1890-01-01T05:45:08Z`	`1889-12-31 23:59:56`	-05:45:08 → -05:45:12	`MMT`	No	overlap
`1934-06-23T05:45:12Z`	`1934-06-22 23:45:12`	-05:45:12 → -06:00	`CST`	No	overlap
`1973-05-01T06:00:00Z`	`1973-05-01 01:00:00`	-06:00 → -05:00	`EST`	No	gap
`1975-02-16T05:00:00Z`	`1975-02-15 23:00:00`	-05:00 → -06:00	`CST`	No	overlap
`1979-03-18T06:00:00Z`	`1979-03-18 01:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`1979-06-25T05:00:00Z`	`1979-06-24 23:00:00`	-05:00 → -06:00	`CST`	No	overlap
`1980-03-16T06:00:00Z`	`1980-03-16 01:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`1980-06-23T05:00:00Z`	`1980-06-22 23:00:00`	-05:00 → -06:00	`CST`	No	overlap
`1992-01-01T10:00:00Z`	`1992-01-01 05:00:00`	-06:00 → -05:00	`EST`	No	gap
`1992-09-24T05:00:00Z`	`1992-09-23 23:00:00`	-05:00 → -06:00	`CST`	No	overlap
`1993-01-01T06:00:00Z`	`1993-01-01 01:00:00`	-06:00 → -05:00	`EST`	No	gap
`1997-01-01T05:00:00Z`	`1996-12-31 23:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2005-04-10T06:00:00Z`	`2005-04-10 01:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2005-10-02T05:00:00Z`	`2005-10-01 23:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2006-04-30T08:00:00Z`	`2006-04-30 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2006-10-01T06:00:00Z`	`2006-10-01 00:00:00`	-05:00 → -06:00	`CST`	No	overlap

Source: northamerica (Lines 3790 to 3790)

Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]

tzdb guarantees accuracy for timestamps from 1970 onwards. Transitions prior to 1970 represent best-effort historical reconstructions.