Index: /trunk/BNC/CHANGELOG.md
===================================================================
--- /trunk/BNC/CHANGELOG.md	(revision 10881)
+++ /trunk/BNC/CHANGELOG.md	(revision 10882)
@@ -1,7 +1,9 @@
 # Changelog
-## 2.13.6
+## 2.13.6 (2026-04-14)
 - ADDED: **Multi-Frequency PPP capability**
 - ADDED: **Ambiguity Resolution (PPP with AR)** using the Best Integer Equivariant algorithm (BIE) as algorithm for the ambiguity resolution
 - FIXED: Bug for finding client certificates
+- FIXED: sign of biases, which is defined different in SSR and SINEX
+- FIXED: Bug in IGS SSR Epoch Time, which is defined as follows: Full seconds since the beginning of the week of continuous time scale with no offset from GPS, Galileo, QZSS, SBAS, UTC leap seconds from GLONASS, -14 s offset from BDS
 
 ## 2.13.5 (2025-10-11)
@@ -25,5 +27,4 @@
 - FIXED: Bug in BDT methods
 - FIXED: Obs types from skl file can be used now to write them into RINEX version 3 AND 4 observation files as configured
-- FIXED: **Bug in IGS SSR Epoch Time (BDS and GLO)**, which is defined as follows: Full seconds since the beginning of the week of continuous time scale with no offset from GPS, Galileo, QZSS, SBAS, **UTC leap seconds from GLONASS, -14 s offset from BDS**
 - ADDED: 24:00 epoch in orbit and clock product files
 - ADDED: Nav Type considerred in all applications: GPS/QZSS/NavIC: LNAV, GLONASS: FDMA_M, Galileo: I/NAV, BDS: D1/D2, SBAS: SBASL1