IOS Inc.
The Brewer experts
Important:
SETDATE: Automatic date correction in the OP_ST.### file before running the Brewer software. 
01.12.2005.
Calibration information tables. 09.12.2005.
How to find calibration information 25.01.2006.
Brewer operating software v3.76b 26.08.2008.
GWBasic: A help file. 12.12.2005.
Calibrations in 2017:
| Location | Country | Instruments | Month in 2017 | Julian days | Dates |
| Toronto | Canada | January | January 1st-April 15th | ||
| Hohenpeissenberg | Germany | May | May 1st-May 5th | ||
| Lindenberg | Germany | May | May 7th-May 12th | ||
| Poprad_Ganovce | Slovakia | May | May 15th-May 19th | ||
| El_Arenosillo | Spain | May | May 29th-June 9th | ||
| Taipei | Taiwan | June | June 19th-June 23rd | ||
| Hradec_Kralove | Czech_Republic | June | June 27th-June 30th | ||
| Lampedusa | Italy | July | July 2nd-July 8th | ||
| UofRome | Italy | July | July 10th-July 14th | ||
| Arosa | Switzerland | July | July 16th-July 24th | ||
| Aosta | Italy | July | July 24th-July 30th | ||
| Anmyeondo | Korea | August | August 7th-August 12th | ||
| Alomar | Norway | August | August 8th-August 12th | ||
| Oslo | Norway | August | August 15th-August 17th | ||
| Beijing | China | October | October 16th-October 25th | ||
| Mauna_Loa | USA | October | October 26th-November 10th | ||
| Paramaribo | Suriname | November | November 28th-December 1st |