[tz] [PATCH] use official source for 1993 end of time shift

[Alois Treindl]

---
 southamerica | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/southamerica b/southamerica
index 13cc65e..8eb5e25 100644
--- a/southamerica
+++ b/southamerica
@@ -1417,10 +1417,13 @@ Zone Antarctica/Palmer	0	-	-00	1965
 
 # Milne gives 4:56:16.4 for Bogotá time in 1899.  He writes,
 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
+# Alois Treindl quoted DECRETO 267 DE 1993
+# https://www.suin-juriscol.gov.co/viewDocument.asp?ruta=Decretos/1061335
+# Artículo 2° El cambio de hora se hará efectivo a las veinticuatro horas del día 6 de febrero del presente año. 
 
 # Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
 Rule	CO	1992	only	-	May	 3	0:00	1:00	-
-Rule	CO	1993	only	-	Apr	 4	0:00	0	-
+Rule	CO	1993	only	-	Feb	 7	0:00	0	-
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
 		#STDOFF	-4:56:16.4
 Zone	America/Bogota	-4:56:16 -	LMT	1884 Mar 13
-- 
1.8.3.1